> You literally start an entry with "Host <hostname>" follwed by "User" and "IdentifyFile".

But that's so much pain.

> The config file already does this, this is just a shortcut with %h and the file system structure.

No.

    % ssh -F /dev/null -v whoami.filippo.io
    debug1: Trying private key: /home/moviuro/.ssh/id_rsa
    debug1: Trying private key: /home/moviuro/.ssh/id_ecdsa
    debug1: Trying private key: /home/moviuro/.ssh/id_ecdsa_sk
    debug1: Trying private key: /home/moviuro/.ssh/id_ed25519
    debug1: Trying private key: /home/moviuro/.ssh/id_ed25519_sk
    debug1: Trying private key: /home/moviuro/.ssh/id_xmss
    debug1: Trying private key: /home/moviuro/.ssh/id_dsa